i need some help in my login GUI form (created with javax.swing), basically i want to (kind of block) a user from login at 10 failure attempt for amount of time, it starts with 5 seconds, every thing fine first time, but when attempt reaches >10 i want to increase waiting time, how to make amount of time is increase 5 more seconds?, more clearly i want to do this
10 failure attempt, login form is disabled, you have to wait 5 seconds! then try again
11 failure attempt, login form is disabled, you have to wait 10 seconds! then try again
.
.
i tried a javax.swing.Timer for this:
else if(ATTEMPT>10)
{
System.out.println("attempt is more than 10");
try
{
javax.swing.JOptionPane.showMessageDialog(null, "you can wait for now", "10 attemtp", 1);
this.setEnabled(false);
Timer timer = new Timer(1000, new ActionListener()
{
#Override
public void actionPerformed(ActionEvent evt)
{
System.out.println("timer started");
SECONDS--; //SECONDS is an integer =5 in class
jLabel6.setText("you can try again in "+SECONDS);
jLabel6.setVisible(true);
if(SECONDS==0)
{
setEnabled(true);
login_btn.setEnabled(true);
((Timer)evt.getSource()).stop();
System.out.println("timer has stopped");
}
}
});
timer.start();
}
catch (Exception e)
{
e.printStackTrace();
}
}
but i didn't figured out a way to increase waiting time.
this will work perfect for first time, but how can i increase time by 5s for another failure attempt? is using timer is the best solution in this case?
thanks
You actually hardcode SECONDS to 5 according to your comment :
SECONDS--; //SECONDS is an integer =5 in class
So the waiting delay is 5 seconds (1000 from the timer * 5 = 5000 ms).
What you want is a variable time that depends on the number of attempt, that is : SECONDS = 5 * (ATTEMPT - 9);
SECONDS = 5 * 1 = 5 for the 10th attempt
SECONDS = 5 * 2 = 10 for the 11th attempt
And so for...
Which gives :
else if(ATTEMPT>10)
{
SECONDS = 5 * (ATTEMPT - 9);` // CHANGE HERE
System.out.println("attempt is more than 10");
try
{
javax.swing.JOptionPane.showMessageDialog(null, "you can wait for now", "10 attemtp", 1);
this.setEnabled(false);
Timer timer = new Timer(1000, new ActionListener()
{
#Override
public void actionPerformed(ActionEvent evt)
{
System.out.println("timer started");
SECONDS--; //SECONDS is an integer =5 in class
jLabel6.setText("you can try again in "+SECONDS);
jLabel6.setVisible(true);
if(SECONDS==0)
{
setEnabled(true);
login_btn.setEnabled(true);
((Timer)evt.getSource()).stop();
System.out.println("timer has stopped");
}
}
});
timer.start();
}
catch (Exception e)
{
e.printStackTrace();
}
}
If you had read my other question, you'll know I've spent this weekend putting together a 6502 CPU emulator as a programming exercise.
The CPU emulator is mostly complete, and seems to be fairly accurate from my limited testing, however it is running incredibly fast, and I want to throttle it down to the actual clock speed of the machine.
My current test loop is this:
// Just loop infinitely.
while (1 == 1)
{
CPU.ClockCyclesBeforeNext--;
if (CPU.ClockCyclesBeforeNext <= 0)
{
// Find out how many clock cycles this instruction will take
CPU.ClockCyclesBeforeNext = CPU.OpcodeMapper.Map[CPU.Memory[CPU.PC]].CpuCycles;
// Run the instruction
CPU.ExecuteInstruction(CPU.Memory[CPU.PC]);
// Debugging Info
CPU.DumpDebug();
Console.WriteLine(CPU.OpcodeMapper.Map[CPU.Memory[CPU.PC]].ArgumentLength);
// Move to next instruction
CPU.PC += 1 + CPU.OpcodeMapper.Map[CPU.Memory[CPU.PC]].ArgumentLength;
}
}
As you can tell, each opcode takes a specific amount of time to complete, so I do not run the next instruction until I count down the CPU Cycle clock. This provides proper timing between opcodes, its just that the entire thing runs way to fast.
The targeted CPU speed is 1.79mhz, however I'd like whatever solution to the clock issue to keep the speed at 1.79mhz even as I add complexity, so I don't have to adjust it up.
Any ideas?
I wrote a Z80 emulator many years ago, and to do cycle accurate execution, I divided the clock rate into a number of small blocks and had the core execute that many clock cycles. In my case, I tied it to the frame rate of the game system I was emulating. Each opcode knew how many cycles it took to execute and the core would keep running opcodes until the specified number of cycles had been executed. I had an outer run loop that would run the cpu core, and run other parts of the emulated system and then sleep until the start time of the next iteration.
EDIT: Adding example of run loop.
int execute_run_loop( int cycles )
{
int n = 0;
while( n < cycles )
{
/* Returns number of cycles executed */
n += execute_next_opcode();
}
return n;
}
Hope this helps.
Take a look at the original quicktime documentation for inspiration.
It was written a long time ago, when displaying video meant just swapping still frames at high enough speed, but the Apple guys decided they needed a full time-management framework. The design at first looks overengineered, but it let them deal with widely different speed requirements and keep them tightly synchronized.
you're fortunate that 6502 has deterministic time behaviour, the exact time each instruction takes is well documented; but it's not constant. some instructions take 2 cycles, other 3. Just like frames in QuickTime, a video doesn't have a 'frames per second' parameter, each frame tells how long it wants to be in screen.
Since modern CPU's are so non-deterministic, and multitasking OS's can even freeze for a few miliseconds (virtual memory!), you should keep a tab if you're behind schedule, or if you can take a few microseconds nap.
As jfk says, the most common way to do this is tie the cpu speed to the vertical refresh of the (emulated) video output.
Pick a number of cycles to run per video frame. This will often be machine-specific but you can calculate it by something like :
cycles = clock speed in Hz / required frames-per-second
Then you also get to do a sleep until the video update is hit, at which point you start the next n cycles of CPU emulation.
If you're emulating something in particular then you just need to look up the fps rate and processor speed to get this approximately right.
EDIT: If you don't have any external timing requirements then it is normal for an emulator to just run as fast as it possibly can. Sometimes this is a desired effect and sometimes not :)
I would use the clock cycles to calculate time and them sleep the difference in time. Of course, to do this, you need a high-resolution clock. They way you are doing it is going to spike the CPU in spinning loops.
Yes, as said before most of the time you don't need a CPU emulator to emulate instructions at the same speed of the real thing. What user perceive is the output of the computation (i.e. audio and video outputs) so you only need to be in sync with such outputs which doesn't mean you must have necessarily an exact CPU emulation speed.
In other words, if the frame rate of the video input is, let's say, 50Hz, then let the CPU emulator run as fast as it can to draw the screen but be sure to output the screen frames at the correct rate (50Hz). From an external point of view your emulator is emulating at the correct speed.
Trying to be cycle exact even in the execution time is a non-sense on a multi-tasking OS like Windows or Linux because the emulator instruction time (tipically 1uS for vintage 80s CPUs) and the scheduling time slot of the modern OS are comparable.
Trying to output something at a 50Hz rate is a much simpler task you can do very good on any modern machine
Another option is available if audio emulation is implemented, and if audio output is tied to the system/CPU clock. In particular I know that this is the case with the 8-bit Apple ][ computers.
Usually sound is generated in buffers of a fixed size (which is a fixed time), so operation (generation of data etc) of these buffers can be tied to CPU throughput via synchronization primitives.
I am in the process of making something a little more general use case based, such as the ability to convert time to an estimated amount of instructions and vice versa.
The project homepage is # http://net7mma.codeplex.com
The code starts like this: (I think)
#region Copyright
/*
This file came from Managed Media Aggregation, You can always find the latest version # https://net7mma.codeplex.com/
Julius.Friedman#gmail.com / (SR. Software Engineer ASTI Transportation Inc. http://www.asti-trans.com)
Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction,
* including without limitation the rights to :
* use,
* copy,
* modify,
* merge,
* publish,
* distribute,
* sublicense,
* and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
*
* JuliusFriedman#gmail.com should be contacted for further details.
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
*
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE,
* ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* v//
*/
#endregion
namespace Media.Concepts.Classes
{
//Windows.Media.Clock has a fairly complex but complete API
/// <summary>
/// Provides a clock with a given offset and calendar.
/// </summary>
public class Clock : Media.Common.BaseDisposable
{
static bool GC = false;
#region Fields
/// <summary>
/// Indicates when the clock was created
/// </summary>
public readonly System.DateTimeOffset Created;
/// <summary>
/// The calendar system of the clock
/// </summary>
public readonly System.Globalization.Calendar Calendar;
/// <summary>
/// The amount of ticks which occur per update of the <see cref="System.Environment.TickCount"/> member.
/// </summary>
public readonly long TicksPerUpdate;
/// <summary>
/// The amount of instructions which occured when synchronizing with the system clock.
/// </summary>
public readonly long InstructionsPerClockUpdate;
#endregion
#region Properties
/// <summary>
/// The TimeZone offset of the clock from UTC
/// </summary>
public System.TimeSpan Offset { get { return Created.Offset; } }
/// <summary>
/// The average amount of operations per tick.
/// </summary>
public long AverageOperationsPerTick { get { return InstructionsPerClockUpdate / TicksPerUpdate; } }
/// <summary>
/// The <see cref="System.TimeSpan"/> which represents <see cref="TicksPerUpdate"/> as an amount of time.
/// </summary>
public System.TimeSpan SystemClockResolution { get { return System.TimeSpan.FromTicks(TicksPerUpdate); } }
/// <summary>
/// Return the current system time in the TimeZone offset of this clock
/// </summary>
public System.DateTimeOffset Now { get { return System.DateTimeOffset.Now.ToOffset(Offset).Add(new System.TimeSpan((long)(AverageOperationsPerTick / System.TimeSpan.TicksPerMillisecond))); } }
/// <summary>
/// Return the current system time in the TimeZone offset of this clock converter to UniversalTime.
/// </summary>
public System.DateTimeOffset UtcNow { get { return Now.ToUniversalTime(); } }
//public bool IsUtc { get { return Offset == System.TimeSpan.Zero; } }
//public bool IsDaylightSavingTime { get { return Created.LocalDateTime.IsDaylightSavingTime(); } }
#endregion
#region Constructor
/// <summary>
/// Creates a clock using the system's current timezone and calendar.
/// The system clock is profiled to determine it's accuracy
/// <see cref="System.DateTimeOffset.Now.Offset"/>
/// <see cref="System.Globalization.CultureInfo.CurrentCulture.Calendar"/>
/// </summary>
public Clock(bool shouldDispose = true)
: this(System.DateTimeOffset.Now.Offset, System.Globalization.CultureInfo.CurrentCulture.Calendar, shouldDispose)
{
try { if (false == GC && System.Runtime.GCSettings.LatencyMode != System.Runtime.GCLatencyMode.NoGCRegion) GC = System.GC.TryStartNoGCRegion(0); }
catch { }
finally
{
System.Threading.Thread.BeginCriticalRegion();
//Sample the TickCount
long ticksStart = System.Environment.TickCount,
ticksEnd;
//Continually sample the TickCount. while the value has not changed increment InstructionsPerClockUpdate
while ((ticksEnd = System.Environment.TickCount) == ticksStart) ++InstructionsPerClockUpdate; //+= 4; Read,Assign,Compare,Increment
//How many ticks occur per update of TickCount
TicksPerUpdate = ticksEnd - ticksStart;
System.Threading.Thread.EndCriticalRegion();
}
}
/// <summary>
/// Constructs a new clock using the given TimeZone offset and Calendar system
/// </summary>
/// <param name="timeZoneOffset"></param>
/// <param name="calendar"></param>
/// <param name="shouldDispose">Indicates if the instace should be diposed when Dispose is called.</param>
public Clock(System.TimeSpan timeZoneOffset, System.Globalization.Calendar calendar, bool shouldDispose = true)
{
//Allow disposal
ShouldDispose = shouldDispose;
Calendar = System.Globalization.CultureInfo.CurrentCulture.Calendar;
Created = new System.DateTimeOffset(System.DateTime.Now, timeZoneOffset);
}
#endregion
#region Overrides
public override void Dispose()
{
if (false == ShouldDispose) return;
base.Dispose();
try
{
if (System.Runtime.GCSettings.LatencyMode == System.Runtime.GCLatencyMode.NoGCRegion)
{
System.GC.EndNoGCRegion();
GC = false;
}
}
catch { }
}
#endregion
//Methods or statics for OperationCountToTimeSpan? (Estimate)
public void NanoSleep(int nanos)
{
Clock.NanoSleep((long)nanos);
}
public static void NanoSleep(long nanos)
{
System.Threading.Thread.BeginCriticalRegion();
NanoSleep(ref nanos);
System.Threading.Thread.EndCriticalRegion();
}
static void NanoSleep(ref long nanos)
{
try
{
unchecked
{
while (Common.Binary.Clamp(--nanos, 0, 1) >= 2)
{
/* if(--nanos % 2 == 0) */
NanoSleep(long.MinValue); //nanos -= 1 + (ops / (ulong)AverageOperationsPerTick);// *10;
}
}
}
catch
{
return;
}
}
}
}
Once you have some type of layman clock implementation you advance to something like a Timer
/// <summary>
/// Provides a Timer implementation which can be used across all platforms and does not rely on the existing Timer implementation.
/// </summary>
public class Timer : Common.BaseDisposable
{
readonly System.Threading.Thread m_Counter; // m_Consumer, m_Producer
internal System.TimeSpan m_Frequency;
internal ulong m_Ops = 0, m_Ticks = 0;
bool m_Enabled;
internal System.DateTimeOffset m_Started;
public delegate void TickEvent(ref long ticks);
public event TickEvent Tick;
public bool Enabled { get { return m_Enabled; } set { m_Enabled = value; } }
public System.TimeSpan Frequency { get { return m_Frequency; } }
internal ulong m_Bias;
//
//Could just use a single int, 32 bits is more than enough.
//uint m_Flags;
//
readonly internal Clock m_Clock = new Clock();
readonly internal System.Collections.Generic.Queue<long> Producer;
void Count()
{
System.Threading.Thread Event = new System.Threading.Thread(new System.Threading.ThreadStart(() =>
{
System.Threading.Thread.BeginCriticalRegion();
long sample;
AfterSample:
try
{
Top:
System.Threading.Thread.CurrentThread.Priority = System.Threading.ThreadPriority.Highest;
while (m_Enabled && Producer.Count >= 1)
{
sample = Producer.Dequeue();
Tick(ref sample);
}
System.Threading.Thread.CurrentThread.Priority = System.Threading.ThreadPriority.Lowest;
if (false == m_Enabled) return;
while (m_Enabled && Producer.Count == 0) if(m_Counter.IsAlive) m_Counter.Join(0); //++m_Ops;
goto Top;
}
catch { if (false == m_Enabled) return; goto AfterSample; }
finally { System.Threading.Thread.EndCriticalRegion(); }
}))
{
IsBackground = false,
Priority = System.Threading.ThreadPriority.AboveNormal
};
Event.TrySetApartmentState(System.Threading.ApartmentState.MTA);
Event.Start();
Approximate:
ulong approximate = (ulong)Common.Binary.Clamp((m_Clock.AverageOperationsPerTick / (Frequency.Ticks + 1)), 1, ulong.MaxValue);
try
{
m_Started = m_Clock.Now;
System.Threading.Thread.BeginCriticalRegion();
unchecked
{
Start:
if (IsDisposed) return;
switch (++m_Ops)
{
default:
{
if (m_Bias + ++m_Ops >= approximate)
{
System.Threading.Thread.CurrentThread.Priority = System.Threading.ThreadPriority.Highest;
Producer.Enqueue((long)m_Ticks++);
ulong x = ++m_Ops / approximate;
while (1 > --x /*&& Producer.Count <= m_Frequency.Ticks*/) Producer.Enqueue((long)++m_Ticks);
m_Ops = (++m_Ops * m_Ticks) - (m_Bias = ++m_Ops / approximate);
System.Threading.Thread.CurrentThread.Priority = System.Threading.ThreadPriority.Lowest;
}
if(Event != null) Event.Join(m_Frequency);
goto Start;
}
}
}
}
catch (System.Threading.ThreadAbortException) { if (m_Enabled) goto Approximate; System.Threading.Thread.ResetAbort(); }
catch (System.OutOfMemoryException) { if ((ulong)Producer.Count > approximate) Producer.Clear(); if (m_Enabled) goto Approximate; }
catch { if (m_Enabled) goto Approximate; }
finally
{
Event = null;
System.Threading.Thread.EndCriticalRegion();
}
}
public Timer(System.TimeSpan frequency)
{
Producer = new System.Collections.Generic.Queue<long>((int)(m_Frequency = frequency).Ticks * 10);
m_Counter = new System.Threading.Thread(new System.Threading.ThreadStart(Count))
{
IsBackground = false,
Priority = System.Threading.ThreadPriority.AboveNormal
};
m_Counter.TrySetApartmentState(System.Threading.ApartmentState.MTA);
Tick = delegate { m_Ops += 1 + m_Bias; };
}
public void Start()
{
if (m_Enabled) return;
m_Enabled = true;
m_Counter.Start();
var p = System.Threading.Thread.CurrentThread.Priority;
System.Threading.Thread.CurrentThread.Priority = System.Threading.ThreadPriority.Lowest;
while (m_Ops == 0) m_Counter.Join(0); //m_Clock.NanoSleep(0);
System.Threading.Thread.CurrentThread.Priority = p;
}
public void Stop()
{
m_Enabled = false;
}
void Change(System.TimeSpan interval, System.TimeSpan dueTime)
{
m_Enabled = false;
m_Frequency = interval;
m_Enabled = true;
}
delegate void ElapsedEvent(object sender, object args);
public override void Dispose()
{
if (IsDisposed) return;
base.Dispose();
Stop();
try { m_Counter.Abort(m_Frequency); }
catch (System.Threading.ThreadAbortException) { System.Threading.Thread.ResetAbort(); }
catch { }
Tick = null;
//Producer.Clear();
}
}
Then you can really replicate some logic using something like
/// <summary>
/// Provides a completely managed implementation of <see cref="System.Diagnostics.Stopwatch"/> which expresses time in the same units as <see cref="System.TimeSpan"/>.
/// </summary>
public class Stopwatch : Common.BaseDisposable
{
internal Timer Timer;
long Units;
public bool Enabled { get { return Timer != null && Timer.Enabled; } }
public double ElapsedMicroseconds { get { return Units * Media.Common.Extensions.TimeSpan.TimeSpanExtensions.TotalMicroseconds(Timer.Frequency); } }
public double ElapsedMilliseconds { get { return Units * Timer.Frequency.TotalMilliseconds; } }
public double ElapsedSeconds { get { return Units * Timer.Frequency.TotalSeconds; } }
//public System.TimeSpan Elapsed { get { return System.TimeSpan.FromMilliseconds(ElapsedMilliseconds / System.TimeSpan.TicksPerMillisecond); } }
public System.TimeSpan Elapsed
{
get
{
switch (Units)
{
case 0: return System.TimeSpan.Zero;
default:
{
System.TimeSpan taken = System.DateTime.UtcNow - Timer.m_Started;
return taken.Add(new System.TimeSpan(Units * Timer.Frequency.Ticks));
//System.TimeSpan additional = new System.TimeSpan(Media.Common.Extensions.Math.MathExtensions.Clamp(Units, 0, Timer.Frequency.Ticks));
//return taken.Add(additional);
}
}
//////The maximum amount of times the timer can elapse in the given frequency
////double maxCount = (taken.TotalMilliseconds / Timer.Frequency.TotalMilliseconds) / ElapsedMilliseconds;
////if (Units > maxCount)
////{
//// //How many more times the event was fired than needed
//// double overage = (maxCount - Units);
//// additional = new System.TimeSpan(System.Convert.ToInt64(Media.Common.Extensions.Math.MathExtensions.Clamp(Units, overage, maxCount)));
//// //return taken.Add(new System.TimeSpan((long)Media.Common.Extensions.Math.MathExtensions.Clamp(Units, overage, maxCount)));
////}
//////return taken.Add(new System.TimeSpan(Units));
}
}
public void Start()
{
if (Enabled) return;
Units = 0;
//Create a Timer that will elapse every OneTick //`OneMicrosecond`
Timer = new Timer(Media.Common.Extensions.TimeSpan.TimeSpanExtensions.OneTick);
//Handle the event by incrementing count
Timer.Tick += Count;
Timer.Start();
}
public void Stop()
{
if (false == Enabled) return;
Timer.Stop();
Timer.Dispose();
}
void Count(ref long count) { ++Units; }
}
Finally, create something semi useful e.g. a Bus and then perhaps a virtual screen to emit data to the bus...
public abstract class Bus : Common.CommonDisposable
{
public readonly Timer Clock = new Timer(Common.Extensions.TimeSpan.TimeSpanExtensions.OneTick);
public Bus() : base(false) { Clock.Start(); }
}
public class ClockedBus : Bus
{
long FrequencyHz, Maximum, End;
readonly Queue<byte[]> Input = new Queue<byte[]>(), Output = new Queue<byte[]>();
readonly double m_Bias;
public ClockedBus(long frequencyHz, double bias = 1.5)
{
m_Bias = bias;
cache = Clock.m_Clock.InstructionsPerClockUpdate / 1000;
SetFrequency(frequencyHz);
Clock.Tick += Clock_Tick;
Clock.Start();
}
public void SetFrequency(long frequencyHz)
{
FrequencyHz = frequencyHz;
//Clock.m_Frequency = new TimeSpan(Clock.m_Clock.InstructionsPerClockUpdate / 1000);
//Maximum = System.TimeSpan.TicksPerSecond / Clock.m_Clock.InstructionsPerClockUpdate;
//Maximum = Clock.m_Clock.InstructionsPerClockUpdate / System.TimeSpan.TicksPerSecond;
Maximum = cache / (cache / FrequencyHz);
Maximum *= System.TimeSpan.TicksPerSecond;
Maximum = (cache / FrequencyHz);
End = Maximum * 2;
Clock.m_Frequency = new TimeSpan(Maximum);
if (cache < frequencyHz * m_Bias) throw new Exception("Cannot obtain stable clock");
Clock.Producer.Clear();
}
public override void Dispose()
{
ShouldDispose = true;
Clock.Tick -= Clock_Tick;
Clock.Stop();
Clock.Dispose();
base.Dispose();
}
~ClockedBus() { Dispose(); }
long sample = 0, steps = 0, count = 0, avg = 0, cache = 1;
void Clock_Tick(ref long ticks)
{
if (ShouldDispose == false && false == IsDisposed)
{
//Console.WriteLine("#ops=>" + Clock.m_Ops + " #ticks=>" + Clock.m_Ticks + " #Lticks=>" + ticks + "#=>" + Clock.m_Clock.Now.TimeOfDay + "#=>" + (Clock.m_Clock.Now - Clock.m_Clock.Created));
steps = sample;
sample = ticks;
++count;
System.ConsoleColor f = System.Console.ForegroundColor;
if (count <= Maximum)
{
System.Console.BackgroundColor = ConsoleColor.Yellow;
System.Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("count=> " + count + "#=>" + Clock.m_Clock.Now.TimeOfDay + "#=>" + (Clock.m_Clock.Now - Clock.m_Clock.Created) + " - " + DateTime.UtcNow.ToString("MM/dd/yyyy hh:mm:ss.ffffff tt"));
avg = Maximum / count;
if (Clock.m_Clock.InstructionsPerClockUpdate / count > Maximum)
{
System.Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("---- Over InstructionsPerClockUpdate ----" + FrequencyHz);
}
}
else if (count >= End)
{
System.Console.BackgroundColor = ConsoleColor.Black;
System.Console.ForegroundColor = ConsoleColor.Blue;
avg = Maximum / count;
Console.WriteLine("avg=> " + avg + "#=>" + FrequencyHz);
count = 0;
}
}
}
//Read, Write at Frequency
}
public class VirtualScreen
{
TimeSpan RefreshRate;
bool VerticalSync;
int Width, Height;
Common.MemorySegment DisplayMemory, BackBuffer, DisplayBuffer;
}
Here is how I tested the StopWatch
internal class StopWatchTests
{
public void TestForOneMicrosecond()
{
System.Collections.Generic.List<System.Tuple<bool, System.TimeSpan, System.TimeSpan>> l = new System.Collections.Generic.List<System.Tuple<bool, System.TimeSpan, System.TimeSpan>>();
//Create a Timer that will elapse every `OneMicrosecond`
for (int i = 0; i <= 250; ++i) using (Media.Concepts.Classes.Stopwatch sw = new Media.Concepts.Classes.Stopwatch())
{
var started = System.DateTime.UtcNow;
System.Console.WriteLine("Started: " + started.ToString("MM/dd/yyyy hh:mm:ss.ffffff tt"));
//Define some amount of time
System.TimeSpan sleepTime = Media.Common.Extensions.TimeSpan.TimeSpanExtensions.OneMicrosecond;
System.Diagnostics.Stopwatch testSw = new System.Diagnostics.Stopwatch();
//Start
testSw.Start();
//Start
sw.Start();
while (testSw.Elapsed.Ticks < sleepTime.Ticks - (Common.Extensions.TimeSpan.TimeSpanExtensions.OneTick + Common.Extensions.TimeSpan.TimeSpanExtensions.OneTick).Ticks)
sw.Timer.m_Clock.NanoSleep(0); //System.Threading.Thread.SpinWait(0);
//Sleep the desired amount
//System.Threading.Thread.Sleep(sleepTime);
//Stop
testSw.Stop();
//Stop
sw.Stop();
var finished = System.DateTime.UtcNow;
var taken = finished - started;
var cc = System.Console.ForegroundColor;
System.Console.WriteLine("Finished: " + finished.ToString("MM/dd/yyyy hh:mm:ss.ffffff tt"));
System.Console.WriteLine("Sleep Time: " + sleepTime.ToString());
System.Console.WriteLine("Real Taken Total: " + taken.ToString());
if (taken > sleepTime)
{
System.Console.ForegroundColor = System.ConsoleColor.Red;
System.Console.WriteLine("Missed by: " + (taken - sleepTime));
}
else
{
System.Console.ForegroundColor = System.ConsoleColor.Green;
System.Console.WriteLine("Still have: " + (sleepTime - taken));
}
System.Console.ForegroundColor = cc;
System.Console.WriteLine("Real Taken msec Total: " + taken.TotalMilliseconds.ToString());
System.Console.WriteLine("Real Taken sec Total: " + taken.TotalSeconds.ToString());
System.Console.WriteLine("Real Taken μs Total: " + Media.Common.Extensions.TimeSpan.TimeSpanExtensions.TotalMicroseconds(taken).ToString());
System.Console.WriteLine("Managed Taken Total: " + sw.Elapsed.ToString());
System.Console.WriteLine("Diagnostic Taken Total: " + testSw.Elapsed.ToString());
System.Console.WriteLine("Diagnostic Elapsed Seconds Total: " + ((testSw.ElapsedTicks / (double)System.Diagnostics.Stopwatch.Frequency)));
//Write the rough amount of time taken in micro seconds
System.Console.WriteLine("Managed Time Estimated Taken: " + sw.ElapsedMicroseconds + "μs");
//Write the rough amount of time taken in micro seconds
System.Console.WriteLine("Diagnostic Time Estimated Taken: " + Media.Common.Extensions.TimeSpan.TimeSpanExtensions.TotalMicroseconds(testSw.Elapsed) + "μs");
System.Console.WriteLine("Managed Time Estimated Taken: " + sw.ElapsedMilliseconds);
System.Console.WriteLine("Diagnostic Time Estimated Taken: " + testSw.ElapsedMilliseconds);
System.Console.WriteLine("Managed Time Estimated Taken: " + sw.ElapsedSeconds);
System.Console.WriteLine("Diagnostic Time Estimated Taken: " + testSw.Elapsed.TotalSeconds);
if (sw.Elapsed < testSw.Elapsed)
{
System.Console.WriteLine("Faster than Diagnostic StopWatch");
l.Add(new System.Tuple<bool, System.TimeSpan, System.TimeSpan>(true, sw.Elapsed, testSw.Elapsed));
}
else if (sw.Elapsed > testSw.Elapsed)
{
System.Console.WriteLine("Slower than Diagnostic StopWatch");
l.Add(new System.Tuple<bool, System.TimeSpan, System.TimeSpan>(false, sw.Elapsed, testSw.Elapsed));
}
else
{
System.Console.WriteLine("Equal to Diagnostic StopWatch");
l.Add(new System.Tuple<bool, System.TimeSpan, System.TimeSpan>(true, sw.Elapsed, testSw.Elapsed));
}
}
int w = 0, f = 0;
var cc2 = System.Console.ForegroundColor;
foreach (var t in l)
{
if (t.Item1)
{
System.Console.ForegroundColor = System.ConsoleColor.Green;
++w; System.Console.WriteLine("Faster than Diagnostic StopWatch by: " + (t.Item3 - t.Item2));
}
else
{
System.Console.ForegroundColor = System.ConsoleColor.Red;
++f; System.Console.WriteLine("Slower than Diagnostic StopWatch by: " + (t.Item2 - t.Item3));
}
}
System.Console.ForegroundColor = System.ConsoleColor.Green;
System.Console.WriteLine("Wins = " + w);
System.Console.ForegroundColor = System.ConsoleColor.Red;
System.Console.WriteLine("Loss = " + f);
System.Console.ForegroundColor = cc2;
}
}
My app gets traffic updates from an API (this works) and returns a JSON array, which i'm then taking each element of in a while loop (JSONobject) and attempting to update a TextView with each result every 5 seconds.
However, my script is waiting 15 seconds and then updating to the last value. I've done some research and it says to use asynctask, which I have done, but it has not made a difference.
I've added System.out.println(thestring_to_update_to), and this is working as I would like my app to do (changing every 5 seconds).
The following is in a try/catch block :
JSONArray TrafficInformation = new JSONArray(response);
int TrafficEvents = TrafficInformation.length();
int TrafficEvent = 0;
JSONObject CurrentEvent = new JSONObject();
do{
CurrentEvent = new JSONObject(TrafficInformation.getString(TrafficEvent));
TextView affected_route = (TextView)findViewById(R.id.disrupted_route);
try {
Object[] passTo = new Object[1];
passTo[0] = CurrentEvent.getString("9");
System.out.println(passTo[0]);
new tasker().doInBackground(passTo);
TrafficEvent++;
Thread.sleep(5000);
} catch (Exception e){
Toast.makeText(LiftShare.this, "There was an error with getting traffic info.", Toast.LENGTH_LONG).show();
}
} while (TrafficEvent < TrafficEvents);
I also have this public class
public class tasker extends AsyncTask {
#Override
protected Object[] doInBackground(Object[] Objects) {
TextView affected_route = (TextView)findViewById(R.id.disrupted_route);
affected_route.setText(Objects[0].toString());
return null;
};
}
this is the JSONArray that goes in to the code (It is formatted correctly)
Array
(
[0] => {"1":"Congestion","2":"Minor Disruption - up to 15 minutes delay","3":"Location : The M3 eastbound exit slip at junction J9 . \nReason : Congestion. \nStatus : Currently Active. \nReturn To Normal : Normal traffic conditions are expected between 11:30 and 11:45 on 25 January 2018. \nDelay : There are currently delays of 10 minutes against expected traffic. \n","7":"M3 J9 eastbound exit | Eastbound | Congestion","9":"M3","10":"South East","11":"Hampshire","14":"2018-01-25T11:22:38+00:00"}
[1] => {"1":"Overturned Vehicle","2":"Severe Disruption - in excess of 3 hours delay or road closure","3":"Location : The M3 westbound between junctions J8 and J9 . \nReason : Clearing the scene of an overturned vehicle. \nStatus : Currently Active. \nTime To Clear : The event is expected to clear between 14:45 and 15:00 on 25 January 2018. \nReturn To Normal : Normal traffic conditions are expected between 14:45 and 15:00 on 25 January 2018. \nLanes Closed : All lanes are closed. \nPrevious Reason : Following an earlier accident. \n","7":"M3 westbound between J8 and J9 | Westbound | Overturned Vehicle","9":"M3","10":"South East","11":"Hampshire","14":"2018-01-25T06:51:12+00:00"}
[2] => {"1":"Congestion","2":"Moderate Disruption - between 15 minutes and 3 hours delay","3":"Location : The A34 southbound between the A272 and the junction with the M3 . \nReason : Congestion. \nStatus : Currently Active. \nReturn To Normal : Normal traffic conditions are expected between 12:45 and 13:00 on 25 January 2018. \nDelay : There are currently delays of 40 minutes against expected traffic. \n","7":"A34 southbound within the A272 junction | Southbound | Congestion","9":"A34","10":"South East","11":"Hampshire","14":"2018-01-25T07:48:23+00:00"}
)
How can I get the textview to update to the new value every 5 seconds?
You have to use
new tasker().execute(passTo);
to start asynctask as a thread otherwise, with current implementation, it will just act as a normal method call
Note: you cannot update UI from background thread i.e. inside doInBackground, instead override onPostExecute which runs on UI thread
#Override
protected Object[] doInBackground(Object[] Objects) {
TextView affected_route = (TextView)findViewById(R.id.disrupted_route);
//affected_route.setText(Objects[0].toString()); crash, instead do this in onPostExecute
return null;
};
Update : you can use postDelayed with delay to update UI after some interval
int i = 0;
affected_route.postDelayed(new Runnable() {
public void run() {
textView.setText(yourText);
}
},i+=5000);
AsyncTask seems like a overkill for your requirement as you are not really doing any work in the background. You could schedule the text to be updated after a time period using a Handler (from android.os) like this:
Handler handler = new Handler(Looper.getMainLooper());
Runnable textUpdater = new Runnable() {
#Override
public void run() {
// this needs to execute in the UI thread
affected_route.setText(lastUpdate);
}
};
String lastUpdate = "Store your last update here";
void updateText(){
handler.postDelayed(textUpdater, 5000);
}
My problem is that my JavaFx application has gone to be very slow. Both in the start of the application and in some of the triggered events. It is a calendar application that uses a GridPane, that I am modifying. I have this method:
t.setOnMouseClicked(event->{
long starttid = System.currentTimeMillis();
System.out.println("start");
if (markedTimeEnd != null && markedTimeStart != null) {
colorMinutes(markedTimeStart, markedTimeEnd, Color.BLACK, bakrundWhite);
} else if (markedTimeStart != null) {
colorMinutes(markedTimeStart, markedTimeStart, Color.BLACK, bakrundWhite);
}
long tidNu = System.currentTimeMillis();
long tid = tidNu-starttid;
System.out.println("Print first time:\n"+tid);
int minutTid = gridPane.getRowIndex(t);
int timmeTimme = minutTid / 60;
int minutMinut = minutTid - (60 * timmeTimme);
markedTimeStart = new TidPunkt(timmeTimme, minutMinut);
markedTimeEnd = null;
tid = System.currentTimeMillis() -tidNu;
tidNu = System.currentTimeMillis();
System.out.println("Time for the middel calculations:\n"+tid);
if (markedTimeEnd != null && markedTimeStart != null) {
colorMinutes(markedTimeStart, markedTimeEnd, Color.GREEN,bakrundGren);
} else if (markedTimeStart != null) {
colorMinutes(markedTimeStart, markedTimeStart, Color.GREEN,bakrundGren);
}
event.consume();
repaintAll();
System.out.println("Time to end:\n"+(System.currentTimeMillis()-tidNu));
});
And the code for the colorMinutes:
private void colorMinutes(TidPunkt markedTimeStart, TidPunkt markedTimeEnd, Color colorText, Background colorOther) {
System.out.println("The call is comming");
int startBothTogether = markedTimeStart.getTimme() * 100 + markedTimeStart.getMinut();
int endBothTogether = markedTimeEnd.getTimme() * 100 + markedTimeEnd.getMinut();
System.out.println("Befor filter");
gridPane.getChildren().stream()//parallelStream()
.filter(x-> x.getId()!=null)
.filter(y-> y.getId().matches("\\d\\d:\\d\\d"))
.filter(pp->{
int hoursForPart = Integer.parseInt(((Node) pp).getId().split(":")[0]);
int miutesForPart = Integer.parseInt(((Node) pp).getId().split(":")[1]);
int bothTogether = hoursForPart * 100 + miutesForPart;
if (bothTogether >= startBothTogether && bothTogether <= endBothTogether)
return true;
else
return false;
})
.forEach(pp->{
Platform.runLater(() -> {
System.out.println("Changing collor ----");
if(pp instanceof Pane){
((Pane) pp).setBackground(colorOther)
}else{
((Text) pp).setFill(colorText);
}
});
});
}
But it takes very long before it is change on the screen and it freezes sometime after what I can se is the finish of these methods by the System.out.println. I have been trying to profile but can't figure it out(best I have come up with it that is seems to be a big call tree, of javaFx "stuff" when exiting the method). The System.out.println prints is:
start
Print first time:
0
Time for the middel calculations:
0
The call is comming
Befor filter
Time to end:
373
Changing collor ----
Changing collor ----
Changing collor ----
Changing collor ----
But from button press to all is being color correct it takes many seconds.
The full code can be found here
You're posting to many Runnables using Platform.runLater. There is no reason to use Platform.runLater here at all, since the onMouseClicked event handler is executed on the javafx application thread anyways.
Using
.forEach(pp->{
if(pp instanceof Pane){
((Pane) pp).setBackground(colorOther)
}else{
((Text) pp).setFill(colorText);
}
});
Should improve the performance drastically.
Furthermore you seem to add a huge amout of Nodes in your repaintAll method (more specifically the ritaGrundKalender method) without removing Nodes which increases the number of Runnables for every click. I suggest you change this behavior.
I am trying to use the AsYouTypeFormatter from Google's libphonenumber with TextWatcher and am not sure if it's possible. I have been able to format the text as typed from an EditText field and output it in another EditText but not able to change the original EditText field directly (which is what I want). I know about the phoneNumberFormattingTextWatcher but we want the user to be able to eventually select which locale they're in and have more control than using that allows (from what I have gathered).
Top of class:
private View phoneNumberView;
private EditText phoneNumberText;
private String formattedPhoneNumber;
private boolean isInAfterTextChanged;
private AsYouTypeFormatter aytf;
First I initialize the AsYouTypeFormatter at the top of my class:
aytf = PhoneNumberUtil.getInstance().getAsYouTypeFormatter(Locale.getDefault().getCountry());
After my tabs and such are created, I create an EditText box, format the existing phone number inside of it (which works), and attach the listener (which is the current class):
phoneNumberView = inflater.inflate(R.layout.phone_number_setting, null);
phoneNumberText = (EditText) phoneNumberView.findViewById(R.id.dirty_phone_number);
phoneNumberText.setText(dirtyPhoneNumber);
for (int i = 0; i < dirtyPhoneNumber.length(); i++){
phoneNumberText.setText(aytf.inputDigit(dirtyPhoneNumber.charAt(i)));
}
aytf.clear();
phoneNumberText.setText(dirtyPhoneNumber);
phoneNumberText.addTextChangedListener(this);
Then this is what I have at the moment in my TextWatcher functions, I am not sure which one of these functions my code should be in though:
#Override
public void afterTextChanged(Editable s) {
if (!isInAfterTextChanged) {
isInAfterTextChanged = true;
if(s.length() > 0){
Log.v("AsYouTypeFormatter - source", s.toString());
for(int i = 0; i < s.length(); i++){
formattedPhoneNumber = aytf.inputDigit(s.charAt(i));
Log.v("AsYouTypeFormatter - formatted", formattedPhoneNumber);
}
Log.v("AsYouTypeFormatter - source after loop", s.toString());
//The formatted output shows properly in this EditText but not when I try to put it back into the original one (phoneNumberText)
EditText testPhoneNumberText = (EditText) phoneNumberView.findViewById(R.id.testPhoneNumberText);
testPhoneNumberText.setText(formattedPhoneNumber);
aytf.clear();
}
formattedPhoneNumber = null;
isInAfterTextChanged = false;
}
}
#Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
Here is a sample of the logged output, so I know the formatting is working:
01-03 10:55:02.838: V/AsYouTypeFormatter - source(27114): 15552451234
01-03 10:55:02.838: V/AsYouTypeFormatter - formatted(27114): 1
01-03 10:55:02.838: V/AsYouTypeFormatter - formatted(27114): 15
01-03 10:55:02.838: V/AsYouTypeFormatter - formatted(27114): 1 55
01-03 10:55:02.838: V/AsYouTypeFormatter - formatted(27114): 1 555
01-03 10:55:02.838: V/AsYouTypeFormatter - formatted(27114): 1 555-2
01-03 10:55:02.838: V/AsYouTypeFormatter - formatted(27114): 1 555-24
01-03 10:55:02.850: V/AsYouTypeFormatter - formatted(27114): 1 555-245
01-03 10:55:02.850: V/AsYouTypeFormatter - formatted(27114): 1 555-245-1
01-03 10:55:02.850: V/AsYouTypeFormatter - formatted(27114): 1 555-245-12
01-03 10:55:02.850: V/AsYouTypeFormatter - formatted(27114): 1 555-245-123
01-03 10:55:02.850: V/AsYouTypeFormatter - formatted(27114): 1 555-245-1234
01-03 10:55:02.850: V/AsYouTypeFormatter - source after loop(27114): 15552451234
And here is the image of the output (top EditText is phoneNumberText and bottom is testPhoneNumberText): http://imgur.com/GXwRu.png
What I want to know is how do I get the formatted output back into the original EditText as it's being typed? When I try to do it, weird things happen like duplication or it just shows it unformatted. I've tried using s.replace() but I am not sure that I am using it properly. Is this possible? Thanks?
For others out there who just want to format a user-entered phone number in an EditText as the user types, it's much, much easier to use PhoneNumberFormattingTextWatcher (built in to Android) than attempt any of these verbose answers - and it's ONE LINE OF CODE!
//Add a special listener for this instance that will format phone numbers on the fly.
this.editText.addTextChangedListener(new PhoneNumberFormattingTextWatcher());
You can also pass the region the user has selected, which I think would actually answer the OP's question, but it wasn't available until API 21:
//This version takes a country code!
this.editText.addTextChangedListener(new PhoneNumberFormattingTextWatcher("US"));
I ended up declaring a new String at the top:
private String unformattedPhoneNumber;
Then changing my code to this:
#Override
public void afterTextChanged(Editable s) {
if (!isInAfterTextChanged) {
isInAfterTextChanged = true;
if(s.length() > 0){
Log.v("AsYouTypeFormatter - source", s.toString());
unformattedPhoneNumber = s.toString().replaceAll("[^\\d.]", "");
for(int i = 0; i < unformattedPhoneNumber.length(); i++){
formattedPhoneNumber = aytf.inputDigit(unformattedPhoneNumber.charAt(i));
Log.v("AsYouTypeFormatter - formatted", formattedPhoneNumber);
}
Log.v("AsYouTypeFormatter - source after loop", s.toString());
phoneNumberText.setText(formattedPhoneNumber);
aytf.clear();
}
formattedPhoneNumber = null;
isInAfterTextChanged = false;
}
}
It seems that the aytf wasn't able to format already partially formatted phone numbers so I had to strip out all non digits before resubmitting to aytf? The only problem left now is that the cursor in the EditText field is at the beginning instead of the end now, but that shouldn't be a problem to fix. Yay.
EDITED CODE:
#Override
public void afterTextChanged(Editable s) {
if (!isInAfterTextChanged) {
isInAfterTextChanged = true;
phoneNumberText.setText(pnu.updateNationalNumber(s.toString()));
phoneNumberText.setSelection(this.phoneNumberText.getText().length());
isInAfterTextChanged = false;
}
}
/**
* Updates the national number based on the param s
* Takes all formatting out of param s and then reformats the number
* using the AsYouTypeFormatter for libphonenumber and based upon
* the region code
*
* #param s The formatted value to be used to update the national number
* #return String The new formatted national number
*/
public String updateNationalNumber(String s){
//Instantiate the as you type formatter with the current region (US or UK)
aytf = phoneUtil.getAsYouTypeFormatter(this.currentRegionCode.getCountryCode());
String fNationalNumber = null;
//Format the string
if(s.length() > 0){
String digitString = null;
//If it's in the US remove all leading 1s (international code)
if(this.currentRegionCode == RegionCode.US){
digitString = new String(s.replaceAll("(^[1?])|([^\\d.])", ""));
}
//If it's in the UK remove all leading 44s (international code)
else if (this.currentRegionCode == RegionCode.GB){
digitString = new String(s.replaceAll("(^[4?]{2})|([^\\d.])", ""));
}
if(digitString != null){
//RE input all of the digits into the formatter
for(int i = 0; i < digitString.length(); i++){
fNationalNumber = aytf.inputDigit(digitString.charAt(i));
}
}
//Clear the formatter for the next round of input
aytf.clear();
//Try to update the phone number with the formatted number
try {
phoneUtil.parse(fNationalNumber, this.currentRegionCode.getCountryCode(), this.uPhoneNumber);
//Rejects if the number isn't in an acceptable format for the region code given etc.
} catch (NumberParseException e) {
System.err.println("NumberParseException was thrown: " + e.toString());
}
}
//Return the formatted phone number
return fNationalNumber;
}